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Homework Statement
The memory components in a personal computer require voltages of -12 V, 4 V and 12 V all with respect to a common reference terminal (you can assume this to be the ground). Design a circuit to achieve this if the total power supplied to the divider circuit is 80 W and the supply voltage is 24 V.
The Attempt at a Solution
its simple to make the voltage divider for the positive terminal voltages, but I am not sure, mathematically, how to include a negative terminal.
Ive been placing a resistor between the negative terminal on the source and the ground but whatever resistor i put in there changes the rest.
i suppose my question is
How do you achieve negative voltages from a one sourced voltage divider?
thanks